National Geographic : 1920 Feb
Photographs from Mexican Petroleum Lo. TAMING A GUSHER The big Mexican well, despite its great earth forces, was brought under control. A closer view of Cerro Azul No. 4 after the wrecked derrick was cleared away and heavy clamps, five feet long, fitted over the top of the well-casing (see successive steps in mastering the well, pages 196, 197, and i99). THEIIALTER HALF ON The heavy valve is partlyonand isspraying part oftheoilhundreds of feet on one side. Anyone who hasscrewed anozzle onagarden hose understands the process inminiature, butthis oil-hose was run ning at the rate of threebarrels asecond (also seeillustrations on pages 196, 197, and I99).